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Filing IFTA tax returns
See how to file quarterly IFTA tax returns in Washington and get copies of your returns.
My License Express account
File and pay your taxes online. Manage your IFTA, IRP, Fuel Tax, and Fuel Tax Refund Permit accounts.
How to get your IFTA license and decals
Learn how to apply for an IFTA license and get your decals.
IFTA recordkeeping requirements
IFTA requires motor carriers to keep detailed records for each vehicle. See what you need.
News and updates
Read about recent and upcoming changes affecting Fuel Tax, IFTA, IRP, and Prorate customers.
Laws and rules
Learn about current prorate and fuel tax laws and rules, and view recent rulemaking activity.